实二次曲面上O(p,q)对角作用的共形协变微分算子
Conformally covariant differential operators for the diagonal action of O(p, q) on real quadrics
摘要:
设$X=G/P$是实射影二次曲面,其中$G=O(p,q)$和$P$是$G$的抛物子群.设$\left(π_{λ,ε}, \mathcal{H}_{λ,ε}\right)_{ (λ,ε)\in \mathbb {C}\times \{\pm\}}$是由$P$的特征标导出的$G$的(光滑)表示族.对于$(λ, ε), (μ, η)\in \mathbb{C} \times \{\pm\}$,构造了$X\times X$上的一个微分算子$\mathbf{D}_{(λ,ε), (μ,η)}^{reg}$,它将$G$ -协变地从$\mathcal{H}_{λ,ε} \otimes \mathcal{H}_{μ, η}$作用到$\mathcal{H}_{λ+1,-ε} \otimes \mathcal{H}_{μ+1, -η}$.
英文摘要:
Let $X=G/P$ be a real projective quadric, where $G=O(p,q)$ and $P$ is a parabolic subgroup of $G$. Let $\left(π_{λ,ε}, \mathcal{H}_{λ,ε}\right)_{ (λ,ε)\in \mathbb {C}\times \{\pm\}}$ be the family of (smooth) representations of $G$ induced from the characters of $P$. For $(λ, ε), (μ, η)\in \mathbb{C} \times \{\pm\}$, a differential operator $\mathbf{D}_{(λ,ε), (μ,η)}^{reg}$ on $X\times X$, acting $G$-covariantly from $\mathcal{H}_{λ,ε} \otimes \mathcal{H}_{μ, η}$ into $\mathcal{H}_{λ+1,-ε} \otimes \mathcal{H}_{μ+1, -η}$ is constructed.
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